Improvement in coal-sifters



/f/; h2/finan- N. PETERS. PHOTO-LITHOGRAPHER. WASHKNGTON. D. C.

Y UNITED STATES PATENT CEEICE. v

IMPROVEMENT IN COAL-SIFTERS.

Specification forming part of Letters Patent No. 36,202, dated August19, 1862.

To LZZ whom, it may concern,.-

Be it known that I, CHARLES G.' AUSTIN, of Nantucket, in the county ofNantucket and State of Massachusetts, have invented a new and ImprovedCoal-Sifter; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theaccompanying drawings, forming a part of this specification, in Which-Figure l represents a transverse vertical sec tion of my invention,taken in the plane indicated bythe line x x, Fig. 2. Fig. 2 is alongitudinal vertical section of this invention, the plane of sectionbeing indicated by the line y y, Fig. l.

Similarletters of reference in both views indicate corresponding parts.

This invention consists in the arrangement of a hinged flap attached bymeans of hinges to the cover of the barrel or ash-box, said cover beingmade to swing in a direction opposite to thatof the flap, and providedwith guidegrooves in which the sieve moves, in combination with asuitable hopper or chute attached to the side of the ash-box in such amanner that by closing the flap and the lid the sieve is completelyinclosed and the sifting can be effected without permitting any dust toannoy the operator, and by turning back said cover .the flap opens andrests with its edge on the hopper or chute, thus forming a guide for thegood coals passing from the inverted sieve to the hopper, and through itto a coal-seattle or other suitable receptacle.

To enable those skilled in the art to make and use my invention, I willproceed to describe its construction and operation with reference to thedrawings.

The sieve A is made square or inany other convenient shape, and itisprovided with pins or cleats a, projecting from its sides and iittinginto grooves b in the under side of the cover B. A rod, c, whichprojects beyond the end of the cover, and which isrigidly attached tothe sieve, serves to impart to the latter a longitudinally-slidingmotion.

The cover B is attached to the barrel or ashboX C by means of hinges d,so that'the same, together with the sieve, can be turned into a positionshown in red outlines in Fig. 1 of the drawings. The cover is providedwith a flap, D, which is secured to the same by means of hinges le, sothat it opens in a direction opposite to that ofthe cover. This flap isprovided with flanges f on its ends, catching over the ends of thecover, so that by closing the same the dust has no chance to escape fromthe interior of the box. By opening said Hap free access can be had tothe sieve either for the purpose of introducing the coal and ashes atthe beginning ofthe operation or to pick out the stones and clinkersafter the sifting is cornpleted.

To one side ofthe ash-box C a chute or hop# per, E, is attached, whichis intended to conduct vthe good coals remaining in the sieve to asuitable scuttle or receptacle that may' be placed under said hopper.

The operation is as follows: In order to introduce the coal and ashes tobe sifted, the flap D is raised and the sieve is lled. The flap is nowclosed, and by imparting to thesieve a reciprocating motion in theguidegrooves b, continuing for a short time, the coal and ashes areseparated, the ashes passing'through the sieve into the lower part ofthe lash-box, and

the coal and all coarse parts mixed with them remaining in the sieve.After the dust in the interior of the box has subsided the ap D isthrown open,thestones and clinkers are picked out and dropped into thebox, the flap is closed again, and the cover is reversed to the positionshown in red outlines in Fig. l of the drawings. If the flap is nowreleased, it drops down upon the edge of the hopper and forms a chute,conducting the coal from the sitter to the hopper, and through it to thescuttle or reservoir that may be placed under it. By these means thecoals can be deposited in the scuttle with; out removing the sieve, andby turning the cover back the sifter is ready for a fresh charge.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

The arrangement ofthe Hap D, hinged to the coverB, as described, incombination with the reciprocating sieve A and hopper E, all constructedand operating substantially as specified.

CHARLES G. AUSTIN.

Witnesses:

FRANCIS B. SMITH, J AMES AUsTIN.

